Well after building my advanced combustion ( pics will hopefully be up soon) I've decided to build a barrel-sealing piston gun..

But I can't figure out if the fittings on mcmaster are pressure rated!!! It says if the pipe is, but for an end cap for example, this is all it says.

Shape
Cap

Schedule
40

Pipe Size
4"

Pipe to Pipe Connection
Socket-Weld x Socket-Weld

Material
PVC

Color
White

Maximum Temperature
140° F

WARNING
Never use plastic pipe fittings with compressed air or gas.

Specifications Met
American Society for Testing and Materials (ASTM) and National Sanitation Foundation (NSF)

ASTM Specification
ASTM D1784 and ASTM D2466

NSF Specification
NSF 61

so does any of those specs tell me if it is pressure rated?? IN an earlier topic, someone said that the NSF 61 said that it is pressure rated..But no one confirmed it. So I would like to be sure...Thanks guys.

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"Some say his pet elephant is pink, and that he has no understanding of "PG rated forum". All we know is, he's called JSR. "